/Engine/Source/Runtime/Engine/Public/Animation/AnimPhysicsSolver.h
Constrains the position of a body to one side of a plane placed at PlaneTransform (plane normal is Z axis)
static void ConstrainPlanar ( float DeltaTime, [TArray](API\Runtime\Core\Containers\TArray)< [FAnimPhysLinearLimit](API\Runtime\Engine\Animation\FAnimPhysLinearLimit) > & LimitContainer, [FAnimPhysRigidBody](API\Runtime\Engine\Animation\FAnimPhysRigidBody) * Body, const FTransform & PlaneTransform )